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Beidellite

Pictures (2 Images total)

Beidellit
Views (File:
1203834029
): 4532
Beidellit
derber Beidellit von Rupsroth, Rhön, Deutschland; Größe: 50x40 mm
Copyright: rtbstone; Contribution: rtbstone
Collection: rtbstone
Location: Deutschland/Hessen/Kassel, Bezirk/Fulda, Landkreis/Hilders/Rupsroth
Mineral: Beidellite
Image: 1203834029
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Beidellit

derber Beidellit von Rupsroth, Rhön, Deutschland; Größe: 50x40 mm

Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2008-02-24
Locality: Rupsroth / Hilders / Fulda, Landkreis / Kassel, Bezirk / Hessen / Deutschland
Beidellit
Views (File:
1643387221
): 340
Beidellit
(eingesprengt, hbr). Milseburg, Hofbieber, Fulda, Kassel, Hessen. BB=5cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Deutschland/Hessen/Kassel, Bezirk/Fulda, Landkreis/Hofbieber/Milseburg
Mineral: Beidellite
Image: 1643387221
License: Usage for Mineralienatlas project only
Beidellit

(eingesprengt, hbr). Milseburg, Hofbieber, Fulda, Kassel, Hessen. BB=5cm.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2022-01-28
Locality: Milseburg / Hofbieber / Fulda, Landkreis / Kassel, Bezirk / Hessen / Deutschland

Collectors Summary

Color weiß, grau, rötlichweiß, bräunlich weiß, blass gelb
Streak color weiß
Lustre Wachsglanz, Glasglanz
Hardness (Mohs) 1 - 2
Cleavages vollkommen {001}
Solubility +++ Säuren
Crystal System orthorhombisch,

Chemism

Chemical formula

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

Chemical composition

Aluminium, Calcium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 437.947192895 u; Number of atoms in the formula: 32.2625

Info

Empirical formula:

(Na0.75(Ca0.5)0.25)0.3Al2(Si0.75Al0.25)4O10(OH)2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.30

10

31.00

1.0079470

10.0794700

Oxygen

O

58.45

16

49.59

15.9994300

255.9908800

Sodium

Na

1.18

0.23

0.70

22.9897702

5.1726983

Aluminium

Al

18.48

3

9.30

26.9815382

80.9446146

Silicon

Si

19.24

3

9.30

28.0855300

84.2565900

Calcium

Ca

0.34

0.04

0.12

40.0784000

1.5029400

Analysis wt%

SiO2 : 45.83, TiO2 : 0.46, Al2O3 : 22.79, Fe2O3 : 5.71, MgO : 0.86, CaO : 1.41, H2O : 22.34 (Ref: Rock Forming Minerals 62)

Strunz 9th edition incl. updates

9.EC.40

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
40:Montmorillonit-Gruppe

Lapis Classification

VIII/H.19-030

VIII: SILIKATE
H: Schichtsilikate
19: Tonminerale, regulär geschichtet; Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Montmorillonit-Gruppe

Classification by Hölzel

9.EI.200

9: SILICATES
E: Phyllosilicates
I: Montmorillonite-Saponite-Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß, grau, rötlichweiß, bräunlich weiß, blass gelb

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend bis teilweise durchscheinend

Lustre

Wachsglanz, Glasglanz

max. Birefringence

0.042

Birefringence chart\! Beidellite title=Birefringence chart Beidellite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.494 - 1.548

RI value β

1.536 - 1.574

RI value γ / ε

1.536 - 1.575

Ri mean

1.541

2V angle

Biaxial (-) 9° - 16°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

orthorhombisch

Cell parameters a (Å)

5.17

Cell parameters b (Å)

9.00

Cell parameters c (Å)

15.2

Cell parameters a/b or c/a

0.574

Cell parameters c/b

1.689

Cell parameters α

90°

Cell parameters β

90°..

Cell parameters γ

90°

Z

2

Volume (ų)

707.256

X-Ray Powder Diffraction

12.4(100),
6.20(50),
4.48(80),
3.10(60),
2.57(20),
2.064(10),
1.693(10),
1.496(10)

XRD chart Beidellite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

1 - 2

VHN (Hardness Vickers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2 - 2.3 / Durchschnittlich = 2.15

2.056 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {001}

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

USA/Colorado/Saguache Co./Crystal Hill District/Beidell

Type material

National Museum of Natural History, Washington, D.C., USA

Collection number of type material

R4762

Preface

Associations

Plagioklas, Quarz, Orthoklas, Montmorillonit, Kaolin, Allophan, Muskovit

Name from

der Typlokalität Beidell, Colorado, USA

Author (Name, Year)

Larsen & Wherry, 1925

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 70

New Mineral Names - American Mineralogist, Vol. 11 (1926), 167

American Mineralogist, Vol. 47 (1962), 137-146 [orthorhombisch]

American Mineralogist Vol. 70 (1985), 1004-1010

GEORGE E. CHRISTIDIS - Genesis and compositional heterogeneity of smectites. Part III: Alteration of basic pyroclastic rocks - A case study from the Troodos Ophiolite Complex, Cyprus - American Mineralogist: 91: 685-701

Investigation of dioctahedral smectite hydration properties by modeling of X-ray diffraction profiles - American Mineralogist, Vol. 92 (2007), 1731-1743

Significance of the depth-related transition montmorillonite-beidellite in the Bouillante geothermal field (Guadeloupe, Lesser Antilles) - American Mineralogist, Vol. 92 (2007), 1800-1813

Rehydration of dehydrated-dehydroxylated smectite in a low water vapor environment - American Mineralogist, Vol. 97 (2012), 110-127

European Journal of Mineralogy 5 (1993), 623

Canadian Mineralogist 15 (1977), 22

Synthesis and properties of regularyly interstratified (R=2) margarite (0.67) - beidellite , a 34 Å phase - Canadian Mineralogist 36 (1998), 1569-1576

Mineralogical Magazine 25 (1938), 140

A potassium-rich beidellite from a laterite pallid zone in Western Australia - Clay Minerals (1991) 26, 233 - 244

Smectites in the montmorillonite-beidellite series - Clay Minerals (1991) 26, 359-369

Kaolinite/Montmorillonite reembles beidellite - Clays and Clay Minerals, Vol. 42 No. 5 (1994), 643-651

Synthesis of a regularyly interstratified 2:1 margarite and beidellite (34 Å phase) - Clay Minerals (1998) 33, 363 - 367

Metachromasy in clay dye systems: the adsorption of acridine orange by Na-beidellite - Clay Minerals (1999) 34, 459-467

Other languages

German

Beidellit

Spanish

Beidellita

English

Beidellite

French

Beidellite

Russian

Бейделлит

Alternative Name

Al Montmorillonite

Aluminium Montmorillonite

Chrome-Beidellite

English

Fuller's earth

CNMNC symbol

Symbol

Bei

Locations with GPS information

IDs

GUSID (Global unique identifier short form) jPqq61QgFEC3j7pasKF8fg
GUID (Global unique identifier) EBAAFA8C-2054-4014-B78F-BA5AB0A17C7E
Database ID 340